G-as bubbtee



Nov. 24, 1925- A. F. THOMPSCN GAS BURNER Filed June 11, 1925 2 Sheets-Sheet 1 Nov. 24 1925- A. F. THOMPSON GAS BURNER Filed June 11. 1925 2 Sheets-Sheet 2 n mu afrozuclrv Patented Nov. 24, 1925.

TENT

GAS BURNER.

Application filed June 11, 1925.

To all whom 2'25 may concern:

Be it known that l. Arrow/res F. TimursoN, a citizen of the United States oi America, and a resident of Huntington,

county 01 Cabell, and State of l v cst Vii:

ginia, have invented certain new and useful Improvements in Gas Burners, of which the following is a full and clear specification.

This invention relates to that type of gasburner in which a jet of unde pressure is injected into an inlet-tube, prererably ot the Venturi type, in such manner as to draw into the inlet-tube a quantity of air, the air and the gas being injected into a mixingchamber where they are intimately mixed before exit at the burner-tips. and the object of the present invention is to simplify the construction of the mixing-chamber and so construct it that a thorough and even admixture of the gas and air is obtained before the mixture is delivered at the burner-tubes, as more fully hereinafter set forth.

In the drawing Fig. 1 is a perspective View of the burner mixingchamber, minus the gas-supply tube and the burnertips;

Fig. 2 is a vertical sectional view on the line 22 of Fig. 1;

Fig. 3 is a sectional view on the line 3-3 of Fig. 1;

Fig. 4 is a horizontal sectional view taken through the main part of the mixingchamber;

Figs. 5, 6, 7 and 8 are detail views of a slightly modified arrangement of the mixing-ehamber.

Referring to the drawing annexed by reference-characters, 1O designates an inlet cup or hell having in its center a tubular support 11 for the exit-end of the gas-supplv pipe, not shown, which is positioned to throw a continuous jetof into the inlettube 12 connected with the mouth-piece 10. The inner end of this inlet-tube opens up wardly into a tube 13, about midway the length of the same. The tube 13 is provided with a- V-shaped deflector 14 which dips Serial No. 36,401.

down toward, and to a point near, the exit off the inlet-tube; this double deflector 1 1 serves to divide the incoming gas and air equally between the two parts of the mixii'ig-tube 13. 1-; parallel mixing-tube 15 is provided and the ends of this tube 15 are connected to the respective ends 01 the tube 13 by end-connections 16, these end-connections being curred, i. e., semi-circular, to insure easy and even delivery of the mixture into the final mixing-tube 15. The top face of the final tube 15 is provided witha series 01 openings 17 for the reception of the burner-tips, shown in dotted lines in Fig. 2 at 18, which are desirably of the usual lava type. The whole structure is desirably cast in one piece, the in et-tube 12 being integral with the under wall of the preliminary mixing-tube 18. This structure provides a very simple way or thoroughly mixing the gas and air, without lowering its pressure at the burner-tips, and at the same time insuring a uniform pressure at the burner-tips, this latter being obviously a very desirable result.

The type of device shown in Figs. 1 to d is desirable for use in stoves, where vertical space is limited. in other cases, where vertical space is available, I may use the type illustrated in Figs. 5 to 8, inclusive. In this structure, the arrangement is the same except that the two tubes 13 and 15 are arranged one above the other.

What I claim as new is:

In a burner or" the type set forth, an elongated elliptical mixing-chamber consisting of two parallel tubes joined at their ends by curved connections, one of the tubes being provided with a series oi? burner-tip-holes along its length and the other tube being provided with a gas-and-air inlet midway 01 its length, a gas-and-air injector connected with said inlet. the tube wall opposite said inlet being extended inwardly to form a double deflector, for the purpose set forth.

In testimony whereof I hereunto aflix my signature.

AUGUSTUS F. THOMPSON. 

